Clarity required for small Ansible code segment

[harjitsachar]

tasks:
    - name: Check if /var/run/app.lock exists
      stat:
        path: /var/run/app.lock
      register: lock

    - name: Fail if the application is running
      fail:
      when: not lock.stat.exists

Can you validate if the excerpt of code is doing opposite of what it should. The when clause should be 

when:  lock.stat.exists

rather than what is written.

[andkra]

Hello,

Code is OK.

fail failed when when is True ;-)

lock.stat.exists is False if file does not exists.

you can verify if you look what the content of lock is.

- name: print var lock
  debug:
    var: lock

Pay attention. I think there was a change in one of the previous ansible versions with the stat module. Means, it could depend on the ansible version.